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ML4425

Part Number	ML4425
Manufacturer	Fairchild
Description	Sensorless BLDC Motor Controller
Published	May 7, 2005
Detailed Description	www.fairchildsemi.com ML4425 Sensorless BLDC Motor Controller Features • • • • • • Stand-alone operation Motor starts a...
Datasheet	ML4425 PDF File

Overview

www.
fairchildsemi.
com ML4425 Sensorless BLDC Motor Controller Features • • • • • • Stand-alone operation Motor starts and stops with power to IC On-board start sequence: Align ♦ Ramp ♦ Set Speed Patented Back-EMF commutation technique provides jitterless torque for minimum “spin-up” time Onboard speed control loop PLL used for commutation provides noise immunity from PWM spikes, compared to noise sensitive zero crossing technique PWM control for maximum efﬁciency Direct FET drive for 12V motors; drives high voltage motors with IC buffers General Description The ML4425 PWM motor controller provides all of the functions necessary for starting and controlling the speed of delta or wye wound B...

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